Plate-bending press



J. A. PERONY.

PLATE BENDING PRESS.

APPLICATION HLED JULY 21,1920.

Patented July H, 1922;.

5 SHEETS-SHEET I.

mzm'm J. A. PERONY.

PLATE BENDING PRESS.

APPLICATION FILED JULY 21,1920.

KAZQRW. Patented July 11 1922.,

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J. A. PERONY.

PLATE BENDING PRESS.

5 SHEETS-SHEET 3.

' v APPLICATION FILED JULY 21.1920. Lgggj'yg Patented July H, 1922,

J. A. PERONY. PLATE BENDING PRESS.

APPLICATION FILED JULY 21,1920.

Patented July H, 1922.

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J. A. PERONY.

PLATE BENDING PRES S. APPLICATION FILED JULYYZIV, I920.

Patented July 111, 1922.

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EN?" he PA a JEAN ALBERT lPERON-Y, 0F ST.-OUEN, FRANCE, ASSIGNOR TO SOCIETE DOUTIL'LAGE MECANIQUE ET DUSINAGE DARTILLERIE, O35 ST.-OUEl T, SEINE. FRANCE, A LIM- I'JIED JOINT-STOCK COMPANY OF FRANCE.

PLATE-BENDING PRESS.

Application filed July 21,

T 0 all whom it may concern:

Be it known that I, JEAN ALBERT PERONY, a citizen of the Republic of France, resident of St.-Ouen, Seine, France, have invented new and useful Improvements in Plate- Bending Presses, which invention is fully set forth in the following specification.

Plate-bending presses are known wherein the plate is placed vertically. In those machines the bending is effected by the motion of a vertical press-head or beam movable horizontally so as to force the plate against a fixed vertical abutment block.

The present invention has for its object to provide an improved bending press of this type, which, compared with the known presses has the following advantages 1. The improved press comprises only two main parts which are of minimum weight and bulk.

2. The movable press-head is guided firmly in the fixed abutment block, whereby it is assured of great stability even when the top driving member of the said press-head is detached for the purpose of removing the bent plate.

3. This driving member is jointed in such a manner that it can be lifted oii and replaced in position without any necessity for altering the adjustment of its length.

4. The efiort exerted by the press is small at the beginning of the bending operation and becomes a maximum at the end of each such operation thus effecting a saving in the power consumed.

According to the present invention the improved plate-bending press comprises a fixed abutment block and a movable presshead provided with a foot which is adapted to slide in the fixed abutment block and which gives great stability to the said press-head. The relative displacement between the movable press-head and the fixed abutment block is produced by the action, upon eccentric journals, o1 two axles rotating respectively in the movable press-head and in its top driving member. These axles which are driven horizontally and are coupled together by their actuating members, are operated by a hydraulic ram or any other su1table means.

A constructional form of this invention is Specification of Letters Patent.

Patented July 11, 11922.

1920. Serial No. 398,019.

illustrated by way of example in the accompanying drawings in which Fig. l is a longitudinal side elevation of the improved plate-bending press, showing the movable press-head in its farthest position from the fixed abutment block.

F 1g. 2 is a vertical section taken along the axis of the press.

Fig. 8 is a plan of the top of the press.

Fig. 4 is a horizontal section on the line 4-4: of Fig. 1.

Fig. 5 is a vertical section on the line 5-5 of Fig. 3.

In Figs. 1 to 5 inclusive, the movable presshead is in its farthest position from the fixed abutment block.

I Fig. 6 is a section similar to Fig. 5, showing the movable press-head in its nearest position to the fixed abutment block.

Fig. 7 is a vertical cross section on the line 7-7 of Fig. 1.

In the above figures A is the fixed bend ing member 01' abutment block made in one piece with the bedplate A Bis the movable bending member or press-head; it is provided at its underside with a guide flange or foot B resting on the bedplate A This foot B slides by means of a nose B in a bottom recess or guide portion a of the fixed abutment block A. In other words,

the movable press-head has the shape of an angle bar whose vertical flangeconstitutes the tool proper, (the press-head) by means of its edge Z), whereas the horizontal flange 13 -13 is guided by its nose B in a recess a of the fixed abutment block AA C and C are axles formed at their ends with eccentric journals 0 0 and c 0 respectively; they serve for driving the movable press-head at its to a and bottom ends.

The bottom axle b rotates in the nose B of the movable press-head, whereas its jour nals 0 revolve, each in a slide block D which is incapable of moving horizontally, but is able to move vertically in a slideway A of the fixed abutment block A.

The top axle C rotates in the top driving member proper consisting of a tie-rod E which is engaged by means of an eye 6 on a top projection b of the movable press-head B. The side journals 0 revolve, like the j ournals 0 each in a side block D which cannot move horizontally, but is capable of vertical motion in a slideway A formed on the fixed abutment block A.

The foot B and the tie-rod E provide connections between the fixed bending memher or abutment block A and the movable bending member or press head B, and relative movement between said members is effected by the axles C and C which are eccentrically journaled in the abutment and the tie-rod E and foot B respectively.

On the two axles C, C there are fixed levers H, H which are parallel to each other and are coupled together by connecting rods J. Moreover, each side journal 0 is kept at a constant distance from the corresponding journal 0 by a stay rod K.

The displacements of the movable presshead may be produced hydraulically by a plunger L working in a fixed cylinder M and acting upon the levers H through the medium of links N.

For the purpose of allowing of the removal of the plate after it has been bent, the tie-rod E is arranged to be movable around the top axle C. The rotational motion of the tie-rod E is produced hydraulically by the action of a plunger P working in a cylinder R and coupled to the tie-rod E by two links S.

The operation of the improved plate bending press is as follows:-

On pressure water being admitted into the hydraulic cylinder M, the plunger L will move down and act through the links'N upon the bottom levers H which will in their turn act through the connecting rods J upon the top levers H. The levers H, H fixed on the journals 0, c compel the axles C and C to rotate together. During this movement the bottom axle C remains at a constant height, but moves horizontally and thus drives the movable press-her. d B. The eccentric side journals 0 move vertically and compel the side journals 0 of the top axle C to move through an equal vertical dis tance.

The result of this is that the top axle C remains at a constant height and displaces itself horizontally, moving with it through the tie-rod E, the upper part of the movable press-head B. The movements of the two axles C C being exactly similar to each other, the movable press-head B will be displaced parallelly to itself, and the tool I) will compel the plate to enter the cavity a constituting the matrix, in the fixed abutment block A.

When the stroke has been completed, the hydraulic plunger L is caused to move in the reverse direction, and the axles C C thereby receive a movement that is the reverse of the preceding movement, and causes the movable press-head B to move away from the fixed abutment block A. In this movement away, the movable press-head B is always being displaced parallelly to itself.

When the bending of the plate is complet ed, the ressure water is admitted to the plunger i? which, through the medium of the connecting rods S, causes the tie-rod E to turn on the central journal of the top axle C for the purpose of bringing it into the position indicated in 'dot-and-dash lines in Fig. 1.

The plate can then be removed, and by causing the plunger P to act in the reverse direction, the tie-rod E can then be returned into its operative position. When the tierod E is lifted, the movable press-head B has nevertheless o'reat stability by reason of its bottom guidance, and therefore any handling of the plate may be done without detriment to the stability of the press.

It is to be understood that the hydraulic drive (ML) of the levers H, may be replaced by any other suitable drive. Similarly the turning movement of the tie-rod E around the axle C, may be produced by a means other than the one. shown by way of example.

Having now" particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 2- 1. A plate bending press comprising a fixed abutment block provided with a recessed guide portion, an angularly formed press head having one side shaped to provide a bending tool and the other side formed to provide a flange engaging in the recessed guide portion of said abutment block, and means adapted to impart parallel reciprocating motion to the press head with respect to the abutment block, said means including a tie rod operatively connected with said press head and axles journaled in the abutment block and extending through said tie rod and the flange of said press head respectively.

2. A plate bending press comprising a rigidabutment and a movable press head, and means adapted to impart parallel reciprocating motion to said press head with respect to the abutment, said means comprising a pair of slide blocks movably guided in the abutment, apair of axles eccentrically journaled in said slide blocks and operatively connected with the press head, a source of power, and operative con nections between said source of power and the axles.

Dated this 28th day of May, 1920.

In testimony whereof I have signed this specification.

JEAN ALBERT PERONY. 

